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With Jelly Bean, blind users can use 'Gesture Mode' to reliably navigate the UI using touch and swipe gestures in combination with speech output.

With the new accessibility focus feature, you can move a cursor between controls to maintain a target for the next action or a source for the next navigation event. You can double tap anywhere to launch the current item with accessibility focus.

Text traversal in accessibility now gives you more control – choose to move between pages, paragraphs, lines, words or characters.

TalkBack, a screenreader for Android, now supports gestures to trigger actions, to navigate applications, and traverse text.

You can now swipe from the camera viewfinder to quickly review photos you've taken without having to leave the camera app. You can swipe back to the camera viewfinder to start snapping photos again.

When viewing photos in Gallery, you can pinch to zoom out to enter "filmstrip mode" and rapidly review photos. When viewing photos in filmstrip mode, you can swipe up or down to delete an individual photo. You can also undo the delete with a single tap.

When taking a photo, a new animation sweeps your photo off the screen. There is now a new paging animation when swiping between photos.

Camera features a new animation for switching between the front-facing and back cameras.

When focusing on an object in Camera, a new animation gives you visual feedback on your focus state.

Gallery features a new animation when selecting a photo from within the album view and back.[citation needed]

With Jelly Bean, a redesigned experience uses the power of the Knowledge Graph to show you search results in a richer way. It's easier to quickly get precise answers to search queries and explore and browse search results.

Get to Google Search faster: Google Search can be opened directly from the lock screen by swiping up. For devices with software navigation keys, you can now swipe up from the system bar to quickly access Google Search with Google Now. For devices with a hardware search key, you can tap it to launch Google Search.

If you're using a wired headset, long press the headset's button to activate Voice Search. You can quickly perform a search query by voice and have the result read back to you.

You can say "Google" to activate Voice Search from within Google Search.

For many search queries performed through Voice Search, you can now hear a spoken answer.

Voice Search recognition is now significantly faster so you can search quickly on the fly.

Voice Search can now recognize queries even when you have a poor network connection.

A new set of recommendations widgets use a variety of signals — content that people with similar tastes have purchased, stuff that's popular around where you live, content people in your Google+ circles have +1'ed, and more — to recommend new content like apps, games, music, and movies.

A new My Library widget, which displays all of your recent movies, books, music, and magazines and dynamically changes based on what you've been engaging with recently.

Smart App Updates ensure that only the parts of an application that have changed will be downloaded when you next update it, saving on time, bandwidth, and battery when updating apps.

↑"Licenses". Android Open Source Project. Open Handset Alliance. Retrieved September 9, 2012. "The preferred license for the Android Open Source Project is the Apache Software License, 2.0. ... Why Apache Software License? ... For userspace (that is, non-kernel) software, we do in fact prefer ASL2.0 (and similar licenses like BSD, MIT, etc.) over other licenses such as LGPL. Android is about freedom and choice. The purpose of Android is promote openness in the mobile world, but we don't believe it's possible to predict or dictate all the uses to which people will want to put our software. So, while we encourage everyone to make devices that are open and modifiable, we don't believe it is our place to force them to do so. Using LGPL libraries would often force them to do so."